Home / 33,139.10-45,733.56-18,991.97

Finding the Fourth Proportional to 33,139.10, 45,733.56 and 18,991.97

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Solution

The fourth proportional to 33,139.10, 45,733.56 and 18,991.97 is: 26,209.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,139.10 : 45,733.56 = 18,991.97 : x
  2. Step 2: Convert to fraction form
    33,139.10/45,733.56 = 18,991.97/x
  3. Step 3: Cross multiply
    33,139.10x = 45,733.56 × 18,991.97
  4. Step 4: Simplify right side
    33,139.10x = 868,570,304.55
  5. Step 5: Solve for x
    x = 868,570,304.55/33,139.10
  6. Step 6: Final answer
    x = 26,209.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.